#include<stdio.h>
int main(){
	int a,n=0;
	printf("[1] apple\n[2] pear\n[3] orange\n[4] grape\n[0] exit\n");
	while(n!=5){
		scanf("%d",&a);
		if(a==1){
			printf("price = 3.00\n");
			n++;
		}
		else if(a==2){
			printf("price = 2.50\n");
            n++;
        }else if(a==3){
            printf("price = 4.10\n");
            n++;
        }else if(a==4){
            printf("price = 10.20\n");
            n++;
        }else if(a==0){
            return 0;
        }
        else{
            	printf("price = 0.00\n");
            	n++;
			}
	}
	return 0;
} 
